Datawell - Rubber Cords
The Datawell rubber cords originally designed to make a flexible mooring for the Datawell Waverider and Directional Waverider buoys have found many maritime applications. Nowadays rubber cord mooring ranges from small spar buoys via large navigation buoys to pontoons. Keeping pace with the extension of application the variety of diameter and elasticity of the rubber has been expanded over the years. All rubber cords are made of natural rubber, known for its excellent abrasion, tear strength and creep properties. The standard rubber cord is made of rubber with a hardness of 45 Shore A, a maximum elongation of 400 % (resulting in a total length of 5 times the original length λ = 5). The rubber itself has a maximum elongation of at least 500 %. Datawell has rubber cords of different diameters (27 and 35 mm) with a hardness of 45 Shore A.
For reasons of buoy survival it is possible to attach a safety line parallel to the rubber cord. The standard safety lines are:
- 2.000 Kg polypropylene
- 2.000 Kg Dyneema
- 8.000 Kg Nylon
- 15.000 Kg Dyneema
The polypropylene and Dyneema safety lines come in action at λ = 4, the Nylon safety line at λ = 3, absorbing shocks while the Nylon stretches to λ = 4.
